Property, plant and equipment (Tables)

12 Months Ended

Dec. 31, 2021

Disclosure of detailed information about property, plant and equipment [abstract]

Disclosure of detailed information about property, plant and equipment [text block]

15.1 Types of property, plant and equipment

Description of types of property, plant and equipment	As of December 31, 2021			As of December 31, 2020
	ThUS$			ThUS$
Property, plant and equipment, net
Land		23,507			23,579
Buildings		270,563			239,666
Other property, plant and equipment		32,846			35,418
Transport equipment		2,463			2,880
Supplies and accessories		5,556			4,183
Office equipment		1,386			459
Network and communication equipment		1,359			1,272
Mining assets		38,241			47,052
IT equipment		3,570			4,083
Energy generating assets		3,970			4,878
Constructions in progress		731,787			486,345
Machinery, plant and equipment		896,977			887,504
Total		2,012,225			1,737,319
Property, plant and equipment, gross
Land		23,507			23,579
Buildings		767,096			705,089
Other property, plant and equipment		239,582			234,238
Transport equipment		13,357			13,030
Supplies and accessories		28,786			26,101
Office equipment		12,943			11,607
Network and communication equipment		9,577			8,951
Mining assets		195,889			194,562
IT equipment		30,456			29,629
Energy generating assets		38,540			38,540
Constructions in progress		731,787			486,345
Machinery, plant and equipment		3,464,881			3,304,061
Total		5,556,401			5,075,732
Accumulated depreciation and value impairment of property, plant and equipment, total
Accumulated depreciation and impairment of buildings		(496,533	)		(465,423	)
Accumulated depreciation and impairment of other property, plant and equipment		(206,736	)		(198,820	)
Accumulated depreciation and impairment of transport equipment		(10,894	)		(10,150	)
Accumulated depreciation and impairment of supplies and accessories		(23,230	)		(21,918	)
Accumulated depreciation and impairment of office equipment		(11,557	)		(11,148	)
Accumulated depreciation and impairment of network and communication equipment		(8,218	)		(7,679	)
Accumulated depreciation and impairment of mining assets		(157,648	)		(147,510	)
Accumulated depreciation and impairment of IT equipment		(26,886	)		(25,546	)
Accumulated depreciation and impairment of energy generating assets		(34,570	)		(33,662	)
Accumulated depreciation and impairment of machinery, plant and equipment		(2,567,904	)		(2,416,557	)
Total		(3,544,176	)		(3,338,413	)

Description of classes of property, plant and equipment	As of December 31, 2021		As of December 31, 2020
	ThUS$		ThUS$
Property, plant and equipment, net
Pumps		28,889		28,184
Conveyor Belt		18,294		20,117
Crystallizer		20,189		22,145
Plant Equipment		168,370		173,335
Tanks		22,358		15,367
Filter		41,438		35,553
Electrical equipment/facilities		97,594		93,937
Other Property, Plant & Equipment		71,150		49,930
Site Closure		34,248		36,828
Piping		106,317		102,578
Well		202,982		226,347
Pond		42,547		41,906
Spare Parts (1)		42,601		41,277
Total		896,977		887,504

(1) The reconciliation of the spare parts provision as of December 31, 2021 and 2020 is as follows:

Conciliation	As of December 31, 2021		As of December 31, 2020
	ThUS$		ThUS$
Opening balance		42,881		39,265
Increase in provision		5,381		3,616
Closing balance		48,262		42,881

Disclosure of reconciliation of changes in property, plant and equipment [Text Block]

15.2 Reconciliation of changes in property, plant and equipment by type:

Reconciliation of changes in property, plant and equipment by class as of December 31, 2021 and 2020:

Reconciliation of changes in property, plant and equipment by class as of December 31, 2021, gross amount	Land			Buildings			Other property, plant and equipment			Transport equipment			Supplies and accessories			Equipment office			Network and communication equipment		Mining assets		IT equipment			Energy generating  assets		Assets under construction			Machinery, plant and equipment			Property, plant and equipment
	ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$		ThUS$		ThUS$			ThUS$		ThUS$			ThUS$			ThUS$
Opening balance		23,579			705,089			234,238			13,030			26,101			11,607			8,951		194,562		29,629			38,540		486,345			3,304,061			5,075,732
Additions		-			-			346			-			-			29			58		-		232			-		470,112			756			471,533
Disposals		-			-			-			-			-			-			-		-		-			-		-			-			-
Increase (decrease) in foreign currency translation difference		(72	)		(152	)		(8	)		(3	)		(14	)		(3	)		-		-		(9	)		-		-			(166	)		(427	)
Reclassifications		-			62,185			5,009			342			2,699			1,310			553		1,327		510			-		(224,945	)		155,900			4,890
Other increases (decreases)		-			(26	)		(3	)		(12	)		-			-			15		-		94			-		275			4,330			4,673
Decreases for classification as held for sale		-			-			-			-			-			-			-		-		-			-		-			-			-
Total changes		(72	)		62,007			5,344			327			2,685			1,336			626		1,327		827			-		245,442			160,820			480,669
Closing balance		23,507			767,096			239,582			13,357			28,786			12,943			9,577		195,889		30,456			38,540		731,787			3,464,881			5,556,401

Reconciliation of changes in property, plant and equipment by class as of December 31, 2021, accumulated depreciation	Land		Buildings			Other property, plant and equipment			Transport equipment			Supplies and accessories			Equipment office			Network and communication equipment			Mining assets			IT equipment			Energy generating  assets			Assets under construction		Machinery, plant and equipment			Property, plant and equipment
	ThUS$		ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$		ThUS$			ThUS$
Opening balance		-		(465,423	)		(198,820	)		(10,150	)		(21,918	)		(11,148	)		(7,679	)		(147,510	)		(25,546	)		(33,662	)		-		(2,416,557	)		(3,338,413	)
Changes
Disposals		-		-			-			-			-			-			-			-			-			-			-		-			-
Depreciation expense		-		(30,872	)		(7,848	)		(759	)		(1,384	)		(383	)		(539	)		(10,138	)		(1,387	)		(908	)		-		(141,460	)		(195,678	)
Impairment (3)		-		(456	)		(75	)		-			(16	)		(8	)		-			-			(8	)		-			-		(5,019	)		(5,582	)
Increase (decrease) in foreign currency translation difference		-		72			7			3			14			2			-			-			9			-			-		97			204
Reclassifications		-		106			(1	)		12			74			(20	)		-			-			47			-			-		(5,108	)		(4,890	)
Other increases (decreases) (1)		-		40			1			-			-			-			-			-			(1	)		-			-		143			183
Decreases for classification as held for sale		-		-			-			-			-			-			-			-			-			-			-		-			-
Total changes		-		(31,110	)		(7,916	)		(744	)		(1,312	)		(409	)		(539	)		(10,138	)		(1,340	)		(908	)		-		(151,347	)		(205,763	)
Closing balance		-		(496,533	)		(206,736	)		(10,894	)		(23,230	)		(11,557	)		(8,218	)		(157,648	)		(26,886	)		(34,570	)		-		(2,567,904	)		(3,544,176	)

Reconciliation of changes in property, plant and equipment by class as of December 31, 2021, net amount	Land			Buildings			Other property, plant and equipment			Transport equipment			Supplies and accessories			Equipment  office			Network and communication equipment			Mining assets			IT equipment			Energy generating  assets			Assets under construction			Machinery, plant and equipment			Property, plant and equipment
	ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$
Opening balance		23,579			239,666			35,418			2,880			4,183			459			1,272			47,052			4,083			4,878			486,345			887,504			1,737,319
Additions		-			-			346			-			-			29			58			-			232			-			470,112			756			471,533
Disposals		-			-			-			-			-			-			-			-			-			-			-			-			-
Depreciation expense		-			(30,872	)		(7,848	)		(759	)		(1,384	)		(383	)		(539	)		(10,138	)		(1,387	)		(908	)		-			(141,460	)		(195,678	)
Impairment (3)		-			(456	)		(75	)		-			(16	)		(8	)		-			-			(8	)		-			-			(5,019	)		(5,582	)
Increase (decrease) in foreign currency translation difference		(72	)		(80	)		(1	)		-			-			(1	)		-			-			-			-			-			(69	)		(223	)
Reclassifications		-			62,291			5,008			354			2,773			1,290			553			1,327			557			-			(224,945	)		150,792			-
Other increases (decreases) (1)		-			14			(2	)		(12	)		-			-			15			-			93			-			275			4,473			4,856
Decreases for classification as held for sale (2)		-			-			-			-			-			-			-			-			-			-			-			-			-
Total changes		(72	)		30,897			(2,572	)		(417	)		1,373			927			87			(8,811	)		(513	)		(908	)		245,442			9,473			274,906
Closing balance		23,507			270,563			32,846			2,463			5,556			1,386			1,359			38,241			3,570			3,970			731,787			896,977			2,012,225

(1) The net balance of “Other Increases (Decreases)” corresponds to all those items that are reclassified to or from “Property, Plant and Equipment”, They can have the following origin: (i) work in progress which is expensed to profit or loss, forming part of operating costs or other expenses per function, as appropriate; (ii) the variation representing the purchase and use of materials and spare parts; (iii) projects corresponding mainly to exploration expenditures and ground studies that are reclassified to the item other non-current financial assets; (iv) software that is reclassified to “Intangibles (v) Provisions related to the investment plan and assets related to closing the site.

(2) The Company classifies as non-current held for sale property, plant and equipment (disposal group) that, at the closing date of the financial statements, is subject to a commitment for sale or where the sales process has been initiated and where the sale is expected to occur within twelve months of that date.

These assets or disposal groups are valued at the lower of carrying amount or the estimated sales value less the costs to sell and stop being amortized from the moment they are classified as non-current assets held for sale.

(3) See note 21.5.

Reconciliation of changes in property, plant and equipment by class as of December 31, 2020, gross amount	Land			Buildings		Other property, plant and equipment			Transport equipment		Supplies and accessories			Equipment  office		Network and communication equipment			Mining assets		IT equipment			Energy generating  assets		Assets under construction			Machinery, plant and equipment			Property, plant and equipment
	ThUS$			ThUS$		ThUS$			ThUS$		ThUS$			ThUS$		ThUS$			ThUS$		ThUS$			ThUS$		ThUS$			ThUS$			ThUS$
Opening balance		23,620			666,027		257,247			12,143		25,531			11,441		8,009			161,619		28,693			38,495		375,316			3,142,461			4,750,602
Additions		-			838		278			-		82			33		386			-		429			-		319,192			987			322,225
Disposals		-			-		(33,048	)		-		(1	)		-		-			-		-			-		-			(149	)		(33,198	)
Increase (decrease) in foreign currency translation difference		22			49		2			1		5			-		-			-		12			-		-			53			144
Reclassifications		-			32,179		9,940			886		488			133		558			32,943		548			45		(203,412	)		125,692			-
Other increases (decreases)		(27	)		5,996		(181	)		-		(4	)		-		(2	)		-		(53	)		-		(4,751	)		35,017			35,995
Decreases for classification as held for sale		(36	)		-		-			-		-			-		-			-		-			-		-			-			(36	)
Total changes		(41	)		39,062		(23,009	)		887		570			166		942			32,943		936			45		111,029			161,600			325,130
Closing balance		23,579			705,089		234,238			13,030		26,101			11,607		8,951			194,562		29,629			38,540		486,345			3,304,061			5,075,732

Reconciliation of changes in property, plant and equipment by class as of December 31, 2020, accumulated depreciation	Land		Buildings			Other property, plant and equipment			Transport equipment			Supplies and accessories			Equipment  office			Network and communication equipment			Mining assets			IT equipment			Energy generating  assets			Assets under construction		Machinery, plant and equipment			Property, plant and equipment
	ThUS$		ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$		ThUS$			ThUS$
Opening balance		-		(438,854	)		(224,602	)		(9,457	)		(20,952	)		(11,021	)		(7,346	)		(138,445	)		(24,334	)		(32,497	)		-		(2,273,188	)		(3,180,696	)
Changes
Disposals		-		-			33,048			-			1			-			-			-			-			-			-		148			33,197
Depreciation expense		-		(26,779	)		(7,284	)		(692	)		(966	)		(126	)		(335	)		(9,065	)		(1,242	)		(1,165	)		-		(134,230	)		(181,884	)
Impairment		-		(23	)		(21	)		-			-			-			-			-			(12	)		-			-		(9,507	)		(9,563	)
Increase (decrease) in foreign currency translation difference		-		(20	)		(2	)		(1	)		(4	)		(1	)		-			-			(10	)		-			-		(28	)		(66	)
Reclassifications		-		-			-			-			-			-			-			-			-			-			-		-			-
Other increases (decreases) (1)		-		253			41			-			3			-			2			-			52			-			-		248			599
Decreases for classification as held for sale		-		-			-			-			-			-			-			-			-			-			-		-			-
Total changes		-		(26,569	)		25,782			(693	)		(966	)		(127	)		(333	)		(9,065	)		(1,212	)		(1,165	)		-		(143,369	)		(157,717	)
Closing balance		-		(465,423	)		(198,820	)		(10,150	)		(21,918	)		(11,148	)		(7,679	)		(147,510	)		(25,546	)		(33,662	)		-		(2,416,557	)		(3,338,413	)

Reconciliation of changes in property, plant and equipment by class as of December 31, 2020, net amount	Land			Buildings			Other property, plant and equipment			Transport equipment			Supplies and accessories			Equipment  office			Network and communication equipment			Mining assets			IT equipment			Energy generating  assets			Assets under construction			Machinery, plant and equipment			Property, plant and equipment
	ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$			ThUS$
Opening balance		23,620			227,173			32,645			2,686			4,579			420			663			23,174			4,359			5,998			375,316			869,273			1,569,906
Additions		-			838			278			-			82			33			386			-			429			-			319,192			987			322,225
Disposals		-			-			-			-			-			-			-			-			-			-			-			(1	)		(1	)
Depreciation expense		-			(26,779	)		(7,284	)		(692	)		(966	)		(126	)		(335	)		(9,065	)		(1,242	)		(1,165	)		-			(134,230	)		(181,884	)
Deterioration		-			(23	)		(21	)		-			-			-			-			-			(12	)		-			-			(9,507	)		(9,563	)
Increase (decrease) in foreign currency translation difference		22			29			-			-			1			(1	)		-			-			2			-			-			25			78
Reclassifications		-			32,179			9,940			886			488			133			558			32,943			548			45			(203,412	)		125,692			-
Other increases (decreases) (1)		(27	)		6,249			(140	)		-			(1	)		-			-			-			(1	)		-			(4,751	)		35,265			36,594
Decreases for classification as held for sale (2)		(36	)		-			-			-			-			-			-			-			-			-			-			-			(36	)
Total changes		(41	)		12,493			2,773			194			(396	)		39			609			23,878			(276	)		(1,120	)		111,029			18,231			167,413
Closing balance		23,579			239,666			35,418			2,880			4,183			459			1,272			47,052			4,083			4,878			486,345			887,504			1,737,319

(1) The net balance of “Other increases (Decreases)” corresponds to all those items that are reclassified to or from property, plant and equipment, They can have the following origin: (i) work in progress which is expensed to profit or loss, forming part of operating costs or other expenses per function, as appropriate; (ii) the variation representing the purchase and use of materials and spare parts; (iii) projects corresponding mainly to exploration expenditures and ground studies that are reclassified to the item other non-current financial assets; (iv) software that is reclassified to “Intangibles”, (v) Provisions related to the investment plan and assets associated to closing the site.

(2) The Company classifies as non-current held for sale property, plant and equipment (disposal group) that, at the closing date of the financial statements, is subject to a commitment for sale or where the sales process has been initiated and where the sale is expected to occur within twelve months of that date.

These assets or disposal groups are valued at the lower of carrying amount or the estimated sales value less the costs to sell and stop being amortized from the moment they are classified as non-current assets held for sale.

Disclosure of rates and costs for capitalized interest of property, plant and equipment [Text Block]

The rates and costs for capitalized interest of property, plant and equipment are detailed as follows:

Costs of capitalized interest	As of December 31, 2021			As of December 31, 2020
	ThUS$			ThUS$
Capitalized interest rate		4	%		4	%
Amount of interest cost capitalized		14,206			8,462